Pepperl+Fuchs VDM70 Series User manual

HANDBUCH / MANUAL /MANUEL
FACTORY AUTOMATION
VDM70

Ausgabedatum 28.02.2007 Part No. 196790
Inhalt / Content / Sommaire
Deutsch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
English . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Français . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
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Copyright (English)
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drawings and the layout be copied without prior written permission from
Pepperl+Fuchs GmbH.
We accept no responsibility for printing errors and mistakes which occurred in
drafting this manual. Subject to delivery and technical alterations.
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brochure. Sous réserve de modifications techniques et de disponibilité pour
livraison.
With regard to the supply of products, the current issue of the following document is applicable:
The General Terms of Delivery for Products and Services of the Electrical Industry, published by the Central
Association of the Electrical Industry (Zentralverband Elektrotechnik und Elektroindustrie (ZVEI) e.V.)
in its most recent version as well as the supplementary clause: "Expanded reservation of proprietorship"

23
Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
1 Signs and Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3 Description of device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.1 Appropriate use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.2 Contents of delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4 Commissioning / operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.1 Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.2 Aligning VDM70-250-R (measurement of distance to reflector) . . . . . . . . . . 26
4.3 Aligning VDM70-10-L (Measurement of distance to object) . . . . . . . . . . . . . . 26
5 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.1 Menu structur . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.1.1 Operating mode (DIST mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.1.2 QuickSet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.1.3 Unit ( mm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.1.4 Serial Select (RS 422 / SSI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.1.5 RS 422 or SSI-compatible or BUS-ADDR (RS 422 / SSI). . . . . . . . . . . . . . . . . . 31
5.1.6 OFFSET (0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.1.7 TEACH IN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.2 FACTORY PRESET. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.3 PASSWORD (OFF). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6 Commands via the serial interface (RS 422 protocol) . . . . . . . . . . 33
6.1 Timing SSI compatible interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
7 Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8 Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
9 Connector pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
9.1 Cable lengths, shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9.1.1 Cable length RS 422 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9.1.2 Cable length SSI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9.1.3 RS 422 and SSI screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
10 Order data / Devices and accessories . . . . . . . . . . . . . . . . . . . . . . . 40
11 Dimension illustrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
12 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
12.1 ProfiBus, DeviceNet connector adapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
12.1.1 Measured value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
12.1.2 Error status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
12.1.3 Parameter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
24
1 Signs and Symbols
2 Safety information
Warning
This symbol signals passages in the manual which must be observed at all times.
Non-compliance can cause injuries or material damage.
Information
This symbol signals passages with useful information.
Warning Laser
This symbol appears in front of warning passages concerning the danger of laser
beams.
It is essential that this manual is read, thoroughly understood and observed before
setting the VDM70 sensor into operation.
The VDM70 sensor may only be connected, mounted and adjusted by qualified
personnel.
Interventions and alterations to the device are not permissible!
The VDM70 sensor is not a safety component as described by EU machine direc-
tives.
In set-up mode, the VDM70 complies with laser protection class 2 according to
DIN EN 60825/1, status 2001.
The VDM70 sensor complies with laser protection class 2 according to DIN EN
60825/1, status 2001. The technical requirements comply with EN 60947-5-2,
2000 edition.
In running mode, the vdm/= works with a laser of protection class 1
Never look into the path of the laser. Do not suppress the reflex to close the eye-
lids.
Gazing into the beam path for longer periods can damage the retina of the eye.
When mounting the sensor, ensure if possible that the beam path is sealed off at
the end.
The laser must not be directed at people (head height).
When aligning VDM70, ensure that there are no reflections on reflective surfaces.
Should the safety label on the VDM70 sensor be partly covered due to its installa-
tion position, other safety labels are to be positioned on visible parts of the sensor.
When applying the new safety label, make sure that you cannot look into the laser
beam whilst reading it.

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Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
3 Description of device
VDM70-250-R/20/87/160 (measurement of distance to reflector)
The VDM70-250-R are optical distance measuring device which detect the distance to a
reflector down to the millimetre in seconds. The measured values are made available via
integrated digital standard interfaces.
The sensors operate according to the principle of pulsed time of flight measurement.
They are particularly suitable for use in applications involving the positioning of cranes,
high bay stackers as well as in high-rise and small-parts warehouses.
VDM70-10-L/87/122/160 (measurement of distance to object)
The VDM70-10-L are optical distance measuring devices which measure the distance
down to the millimetre in seconds. The measured values are made available via integra-
ted digital standard interfaces.
The sensors operate according to the principle of pulsed time of flight measurement.
They are particularly suitable for use in many applications in automation technology whe-
re parts must be detected or measured over long distances.
VDM70 sensors are equipped with the following:
• LCD display and 3 buttons for complete on-site set-up
• "RS 422 interface
• "SSI compatible interface (GRAY or BIN, 24 or 25 bit)
• "2 signal outputs and an error and plausibility output
• "Bus communication with external bus adapter
• "One 4 to 20 mA analogue output (only with VDM70-10-L)
3.1 Appropriate use
3.2 Contents of delivery
The following is supplied in the standard delivery:
• Distance measurement device VDM70
• "Operating manual
VDM70 sensors are optical measuring systems for the measurement of distances
and must only be used for this purpose.
NEVER use these sensors in applications where human safety is at risk
Laser safety information
The sensor is equipped with a red light pilot laser, laser safety class 2, for align-
ment purposes.
The measuring laser is an infrared laser belonging to laser safety class 1.
Running mode: Laser safety class 1
Set-up mode: Laser safety class 2
Never look into the beam !

Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
26
4 Commissioning / operating
4.1 Connection
Once the device has been connected to the power supply, the display shows the measu-
red value currently detected should an object / reflector be in the path of the beam. The
green "POWER" LED lights up.
4.2 Aligning VDM70-250-R (measurement of distance to reflector)
It is possible to align the device over a max. distance of approx. 50 m using the integrated
red light pilot laser (see chapter operating).
For larger distances, the aligning aid listed in the accessories is to be used. This aligning
aid, makes it easily possible to check the position of the red light pilot laser spot on the
reflector at very long ranges. When aligning, first check that the light spot is in the centre
of the reflector at a very short distance (e. g. 1 m). The reflector is then moved to its final
position with the longest range and the position of the light spot is checked again and ad-
justed if necessary. Finally, check the position of the light spot again close-up. The light
spot must always be in the centre of the reflector whatever the position.
The fine adjustment set, available as an accessory, can be used for finer adjustment.
Figure 4.1 Aligning the refelctor
Different reflector types are available according to the distance range required. Only use
the reflectors specified below.
4.3 Aligning VDM70-10-L (Measurement of distance to object)
Alignment can be carried out with the aid of the integrated visible pilot laser (see chapter
"Operation").
The fine adjustment set, available as an accessory, can be used for finer adjustment.
Observe the information pictured below when aligning the devices.
Reflector
Reflector
Reflector

27
Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
Figure 4.2 Aligning the devices
Dimensions of light spot VDM70
Figure 4.3 Dimensions of light spot
5 Operation
The VDM70 sensors are equipped with an LCD display and 3 operating buttons which
control all instrument functions. All parameters can be adjusted and measured values
can be read via the integrated serial interface or your own special application program-
me. (Parameters of RS 422 interface can only be altered on the device)
xx
99
 
27,5 mm
4 m
6 m
10 m
3 m m x 10 m m
4 m m x 12 m m
10 mm x 20 mm
10 m m x 5 mm
27,5 mm
10 m
200 mm x 200 mm
10 m m x 5 mm
100 m
250 m
50 m
20 mm x 20 mm
100mm x 100mm
500 mm x 500 mm
VDM70-250-R
VDM70-10-L

Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
28
In measuring mode:
the text "DIST mm" or "DIST INCH" (depending on unit selected)
and the actual measured value are displayed on the screen.
The three operating buttons have the following general functions
Table 5.1 Three operating buttons
Selecting menu items:
Menu items are displayed in two forms:
1. < Menu item > , with this display, it is possible to switch to another menu item with
or , or select the menu point with
2. Menu item , with this display, the keys or can be used to alter the value.
When the sensor is switched on, the following message appears for
approx. 2 sec.:
The software revision number must always be quoted when contac-
ting the manufacturer with technical queries.
Button Name General operating functions
Enter button General: Selects function and switches one menu level down
or records value and switches one menu level up
In operating mode: Switches to menu level
(If password function is active, switches to password entry.
Measuring mode remains active until correct password has
been entered).
When editing e.g. switching points: switches cursor position
from right to left or ends entry when cursor is at the far left.
Right arrow but-
ton General: scrolls to the next function (right), or increases cur- rent digit by 1 when editing.
In "QuickSet" menu, it enables the teach-in of Q2
In measuring mode, press this button to make the display
light up.
Left arrow but-
ton
General: scrolls to the next function (left), or reduces current
digit by 1 when editing
In "QuickSet" menu, it enables the teach-in of Q1
In measuring mode, press this button to make the display
light up.
ESCape func-
tion
Left and right
arrow buttons
simultaneously
Cancels active function and switches to next menu level
above
(important: buttons must be pressed simultaneously, pre-
vious value is maintained unaltered)
The red pilot laser and the display's background lighting are always active in set-
up mode.
ESC
DIST mm
123456
ESC
ESC
VDM70
Rev. nnnnn

29
Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
5.1 Menu structur
Table 5.2 Menu structur
QuickSet
<Enter>
Betriebsmode
Teach-In
<Setup>
Factory
<Preset>
Passwort
<OFF>
RS422
<ENTER>
Teach-In
<ANALOG
MODE
ANA
Copy Q>A
Teach A1 Teach A2
Teach-In
<Set Q2>
Mode Q2
Teach2.1 Teach2.2
HYST 2
Teach-In
<Set Q1>
Mode Q1
Teach1.1 Teach1.2
HYST 1
4564mm
Q1 |||| q2
Offset
< 0>
OFFSET
nnnn
OFFSET
>CLEAR?
UNIT
<MM>
UNIT
>MM
UNIT
>INCH
SERIAL
>SSI
SERIAL
>EXT.BUS
SERIAL
<RS422>
SERIAL
>RS422
SSI
<Gray25>
Ext.Bus
Search
Parameter
Setup
Factory
>OK
Passwort
<OFF>
Passwort
<ON>
Passwort
----
nur wenn Passwort aktiviert ist
>

Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
30
5.1.1 Operating mode (DIST mm)
When in operating mode, "DIST mm" or "DIST INCH" appears in the first line, depending
on the active unit, and the current measured value is displayed in the second line.
When the or buttons are pressed, the screen lights up.
5.1.2 QuickSet
The current measured value is displayed in the top line. In the centre of the bottom line,
the energy value is displayed as an alignment aid in the form of a bar graph.
Q1 and Q2 can be "taught" directly by pressing the appropriate button or
(Teach function not if SSI mode is active.)
Depending on the selected mode of signal outputs (see Teach-in menu), the rising or fal-
ling edge of the signal output is taught with the set hysteresis in "Single switching" mode.
In "Double switching" mode, the teach point marks the centre of the switching points po-
sitioned 100 mm symmetrically either side (= rising or falling edge) with the set hystere-
sis.
These display symbols have the following meaning:
Q1 = output 1 ON; q1 = output 1 OFF
Q2 = output 2 ON; q2 = output 2 OFF
(also indicated by yellow LEDs on the front of the device)
Quit the menu with the Enter button or ESCape function.
Example:
QuickSet menu; current measured value 4564mm,
Q1 ON, Q2 off, receiving energy approx. 50%
5.1.3 Unit ( mm)
Unit makes it possible to choose between millimetres and inches as the display and out-
put unit. The inch display and output via the interface is in 1/10 MIL or *100 Inch (1 MIL
= 1/1000 inch) , i.e. display value: "123456" (/100 Inch) corresponds with 1234.56 inch
or 1234560 MIL.
5.1.4 Serial Select (RS 422 / SSI)
With Serial Select it is possible to select the interface from RS 422, SSI1/10, SSI1/8 -
compatible.
ESC
4564mm
Q1 ||||||| q2

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Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
5.1.5 RS 422 or SSI-compatible or BUS-ADDR (RS 422 / SSI)
Depending on the setting made in Serial Select, the appropriate interface parameters are
displayed or altered.
The following settings are possible: (delivery status = underligned)
• "RS 422
Baud rate:4.8 or 9.6 or 19.2 or 38.4 or 57.6 kBaud
Data bit:8 or 7
Stop bit:1or 2
REPEAT or SINGLE:REPEAT means that the sensor continuously sends measured
data via the serial interface without waiting for a request. In SINGLE mode, a string of
measured data is only supplied on request
• "SSI: 1/10 = LSB = 0.1mm (10MIL) or 1/8 = LSB = 0.125mm (8MIL)
Different codes:BINARY24 or BINARY25 or GRAY24 or GRAY25 are possible
5.1.6 OFFSET (0)
An offset value can be entered or taught in the value range +/-100,000mm (or correspon-
ding inch value). The measured value is then increased or reduced by the programmed
offset value, depending on the preceding sign. This can compensate a mounting position
which does not correspond with the zero point of the device.
If an offset value is taught, it is automatically given a negative sign when adopted, i.e. the
teach-in position corresponds with the zero point. Delivery status = 0 mm. (The prece-
ding sign can also be set manually).
The offset value can be set back to "0" with the "CLEAR" function.
Example:
Actual distance: 3000 mm
Offset value: - 1200 mm
Output value: 1800 mm
5.1.7 TEACH IN
(Delivery status = Limit value of measurement range)
Qx single switching
Qx single switching
Qx double switching
Qx double switching
Teach-in or manual input of switching points is possible
Hysteresis: Range VDM70 = 5, adjustable in +/-1 mm steps, symmetrically around the swit-
ching point (if upper limit is reached, limit value of measurement range is valid
as upper limit)

Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
32
Editing:
When the teach-in function has been completed with , the value measured at this
moment is adopted and the device switches one menu level up.
If the teach-in function is ended with one of , the edit mode is activated. The
cursor flashes below the digit on the far right-hand side which can be increased or redu-
ced by 1 using the or buttons.
The button is used to switch to the next digit to the left and each digit can now be
altered. Once you have reached the last digit on the left-hand side, press again to
adopt the manually edited value and switch one menu level up.
5.2 FACTORY PRESET
All settings are reset to delivery status.
5.3 PASSWORD (OFF)
Activate or deactivate password entry. Delivery status = inactive (OFF).
The password is permanently "1234" and cannot be changed.
When the device is set to "Password ON" , it is only possible to quit operating mode when
1234 has been entered as password.
Measuring mode continues in the background whilst the password is being entered.
Should no entry be made in the password input menu over a period of approx. 10 se-
conds, operating mode reappears on the display.
Analog output 4 to 20 mA (only VDM70-10-L)
Mode 1, rising characteristic curve
Mode 2, falling characteristic curve
COPY Q => A:
Q1 & Q2: Switching point Q1.1 becomes 0 % point (A1); Q2.1 becomes 100 % (A2) of the cha-
racteristic analog curve.
Q2 & Q1: Switching point Q1.1 becomes 100 % point (A2); Q2.1 becomes 0 % (A1) of the cha-
racteristic analog curve.
TEACH A1 A2: Teach-in of 0 % (A1) and 100 % points (A2) or manual input possible.
A minimal distance of 300 mm between points A1 and A2 must be observed.

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Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
Operating example for menu: QuickSet
Table 5.3 Operating example for menu: QuickSet
6 Commands via the serial interface (RS 422 protocol)
All commands have the following structure: <STX><Command><[Data]><EOT>
All commands are answered by VDM70 as follows:
Menu
level 1
Opera-
tion 1.0
Display:
1st line: Text "DIST mm
2nd line: current measured value
Password input
Menu
level 1
PASS
WORD1.
1
(Only when "PASSWORD" active, delivery status = inactive)
Increases current digit by 1
Reduces current digit by 1
Jumps one digit further or "confirms input" when the far left digit has been reached
and is pressed.
Menu level 2: if input is correct and completed with
Operating mode: if input is wrong or with timeout after approx. 10 sec.
Menu
level 2
Quick-
Set 2.1
UNIT 2.2 SERIAL
2.3 RS 422/ SSI 2.4 OFFSET 2.5 ......... 2.x Password 2.8
Menu
level 3
Quick-
Set 2.1.1
Teach-in Q1 or Q2
Confirm input and switch one menu level up
ESC Switch one menu level up
EE Energy value for alignment
ESC
DIST mm
123456
ESC
PASSWORD
ESC
QuickSet
<SETUP>
ESC
UNIT
<akt. Einh.>
ESC
SERIAL
<akt. Wert.>
ESC
RS422 o. SSI
o. BUS
ESC
OFFSET
<akt. Wert>
ESC
..........
<..........>
ESC
PASSWORD
<ON>/<OFF>
ESC
4564mm
Q1 ||||||| q2

Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
34
Definitions:
In ASCII text (command+data) spaces and capitals/small letters are ignored.
User commands and their meaning
<NAK> the command was not recognised or the data is outside the limit values
or
<ACK> the command was recognised and executed, the command requires no return data
or
<Daten> the command was recognised and the requested data has been sent
STX = start transmission = 02h = CTRL B
EOT = end of text = 04h = CTRL D
NAK = no acknowledge = 15h = CTRL U
ACK = acknowledge = 06h = CTRL F
Command = 3 digit command (ASCII text)
[Daten] = whole numbers (ASCII text)
Com-
mand Name Daten to VDM70 Daten from VDM70 Meaning
"GAP" get all
parameters
- all parameters in text
format:
"VDM70 $Revision
X.XX$"
"pilot is on/off/xx seconds
on"
Uart mode
"Q1: AA MODE = BB
LIMIT1= CC LIMIT2 = DD
HYST = EE INV=ON/
OFF"
"Q2:AA MODE = BB
LIMIT1= CC LIMIT2 = DD
HYST = EE INV = ON/
OFF"
(proximity switch only :
"Qana:
VALUE= FF LIMIT1= CC
LIMIT2= DD
INV=ON/OFF )
"output = GG"
"offset = YYYY"
"password dis/enabled"
"Error-Status =
DDDDDDDD
all parameters of VDM70 are
read:
X.XX: Revision no.
YYYY:User offset
[mm] or [10 MIL]
AA: "ON"=HIGH output,
"OFF"=LOW output
BB : Mode:
"0" = Output off,
"1" = 1 Switching point
"2" = 2 Switching points
CC: Switching point 1,
Offset..12000+Offset
DD: Switching point 2,
Offset..12000+Offset
EE: Hysteresis, 0 to 254 [mm]
GG: Unit of meas., "10 MIL"
or "MM"
DDD :Error status:
FF: Analog value, 0 to 4095
Output of error status, with
D="0": no error D="1":error:
D7: Transmitter faulty
D6: Receiver blinded or faulty
D5: Temperature warning:
T < - 10 °C or T > + 70 °C
D4: Target out of range or
transmitter faulty
D3: Temperature error:T>+80°C
D2: Supply voltage too low
D1: PLL unlocked
D0: always "0"
"ECM" execute
continuous
measurement
- ACK continuous measurement output is
set and triggered by the next
request for measured values

35
Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
"GDB" get energy - Energy value
- 0 ... - 20 dB
indicates the amount of receiving
energy
"GNR" get serial
number
- "xxxxxxxxxx" Serial no. is emitted as ASCII test
(max. 24 characters).
"GSI" get error sta-
tus
- "DDDDDDD"
76543210
Output of error status, with D="0":
no error D="1":error:
D7: Transmitter faulty
D6: Receiver blinded or faulty
D5: Temperature warning:
T< -10°CorT>+70°C
D4: Target out of range or trans-
mitter faulty
D3: Temperature error:T>+85°C
D2: Supply voltage too low
D1: PLL unlocked
D0: always "0"
"GTE" get
temperature
- "+/- DDD" DDD = internal temperature in C
"GVE" get version "VDM70
$Revision X.XX$"
Software version is sent
"GCM" help command
/
get commands
- All available commands All available commands are sent
in text format
"ICM" input
continuous
mode
"0" , "1" ACK Measurement mode setting:
"0" = continuous measurement
output, "1" = output of single
measurement values
"IDO" input offset - 12000 ...
+ 12000
bzw.
- 48000 ...
+ 48000
ACK Setting offset in [mm] or
[INCH * 100]
"IH1" input
hystereses Q1
"000"... "254"
bzw.
"000" ... "999"
(INCH)
ACK Setting hysteresis around swit-
ching points of Q1 in [mm] or
[INCH * 100]
"IH2" input
hystereses Q2
"000"... "254"
bzw.
"000" ... "999"
(INCH)
ACK Setting hysteresis around swit-
ching points of Q2 in [mm] or
[INCH * 100]
"IL1" input limit
Q1 - 1
Offset ...
+ 12000 + Off
set
bzw. Offset ...
48000+Offset
ACK Setting the first switching point of
Q1 in [mm] or [INCH*100]
"IL2" input limit
Q2 - 1
Offset ...
+ 12000 + Off
set
bzw.
Offset ...
48000+Offset
ACK Setting the first switching point of
Q2 in [mm] or [INCH*100]
"IL3" input limit
Q analog 1
Offset ...
+ 12000 + Off
set
ACK Proximity switch only:
Setting 0% point of characteristic
analog curve
"IL4" input limit
Q1 - 2
Offset ...
+ 12000 + Off
set
bzw. Offset ...
48000+Offset
ACK Setting second switching point of
Q1 in [mm] or [INCH*100]

Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
36
Table 6.1 User commands and their meaning
6.1 Timing SSI compatible interface
Figure 6.2 Timing SSI compatible interface
T = Duration of clock signal, minimum 2 µSec = 500 kHz, max. 13 µSec = 77 kHz
Tv = Delay time max. 360 ns
Tm = Minimum time between last rising edge and reloading of SSI approx. 24 µSec.
Gn = MSB (here Gray Code)
24bit transmission: G1 = second LSB, G0 = LSB
24+E transmission: G1 = LSB. G0 = Error bit
25bit transmission: G1 second LSB, G0 = LSB
"IL5" input limit
Q2 - 2
Offset ...
+12000+Off-
set bzw. Off-
set ...
48000+Offset
ACK Setting second switching point of
Q2 in [mm] or [INCH*100]
"IL6" input limit
Q analog 2
Offset ...
+12000+Off-
set
ACK Proximity switch only:
Setting 100% point of characteris-
tic analog curve
"IM1" input mode Q1 "0" , "1" , "2" ACK "0" = inactive,
"1"= 1 switching point,
"2" = 2 switching points
"IM2" input mode Q2 "0" , "1" , "2" ACK "0" = inactive,
"1"= 1 switching point,
"2" = 2 switching points
"INA" input norm
Q analog
"0" , "1" ACK Proximity switch only
"0"= Q, "1"=Q inverted
"IN1" input norm Q1 "0" , "1" ACK "0" = Q, "1"=Q inverted
"IN2" input norm Q2 "0" , "1" ACK "0" = Q, "1"=Q inverted
"IVL" input visible
laser
"0" , "1" ACK "0"=pilot laser on
"1"=pilot laser off
"ISB" input stand-by ACK "0" = operation, "1" = stand-by
"ESM" trigger single
measurement
/
Execute sing.
m.
- <meas. value> Request for measured value with
single measurement output
"EPW" write
parameter
page /
execute
parameter
write
- ACK Parameters are stored
Clock
Daten SSI
Gn Gn-1 G1 G0
T Tm
Tv

37
Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
Attention:
With SSI compatible transmission, data is updated in synchronization with the readout
cycle. The data is as up-to-date as the time interval between two readouts. An intermit-
tent readout is therefore recommended. After a longer readout interval, the data contents
of the first readout can be "out-of-date" and should be ignored.
7 Error messages
In the event of errors, corresponding error messages appear on the display and the error
outputs Qs and Qp (active low) are set according to the following table. The error status
can be questioned via the "GSI" command. In principle, a combination of several errors
can exist. e.g. too low a supply voltage can cause a counter error. In this case the "GSI"
command would report "00000110" (via RS 422)
Table 7.1 Error messages
Error message
on LCD Output (active low) Answer to "GSI" com-
mand (get
error status)
Meaning
QS QP
"BLINDING" active "01000000" External light too strong or internal
error
"LAS.ERR." active active "10000000" Measurement laser faulty
"LOW VOLT" active active "00000100" Error in supply voltage: voltage too low
(or error in measurement of supply vol-
tage)
"NO VALUE" "00000000" First measurement after switching-on
not yet ready. This message disap-
pears after a short time.
"PLL
UNLOCKED" active active "00000010" Counter error
active "00100000" Temperature warning (below -10 C or
above 70 C
"OVERTEMP" active
(Laser
off!)
active
(Laser
off!)
"00101000" Temperature too high (above 85 C
inside); Measurement switched off!
"Dist (mm)
>Maximum" active "00010000" No target in range or sensor badly alig- ned

Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
38
8 Technical data
Distance measuring devices
VDM70-10-L VDM70-250-R
General specifications
Light source laser diode
Approvals CE, cULus
Laser class 1 EN 60825-1
Alignment aid adjustment laser, Laser class 2
Linearity error +/- 8 mm +/- 3 mm (ab 2 m)
Measurement range 0,5 ... 10 m
by 90 % reflection (white)
0,5 ... 250 m on reflector
Reference target Kodak white (90 %) OFR-100/100
Light type IR-Laser 900 nm
adjustment laser red light 650 nm
Diameter of the light spot 3 mm x 10 mm at a
distance of 4 m 20 mm x 20 mm at a distance of 10 m
Resolution 0,1 mm or 0,125 mm
Hysteresis H min. 10 mm (adjustable)
Temperature influence < ± 5 mm absolute
Indicators/operating means
Operating display LED green
Function display LED yellow: switching state
LED orange: error message
Operating elements Keypad (3 membrane keys) for parameter settings on the
LCD display
Electrical specifications
Operating voltage 18 ... 30 V DC
Protection class II
Ripple 10 % within the supply tolerance
No-load supply current I0190 mA
Output
Interfaces RS 422, SSI
Signal output 2 pnp, short-circuit proof, protected against reverse polarity
Switching current 100 mA
Measurement output 1 analogue output
4...20mA,
short-circuit/
overload protected
Response time 12 ms
Repeat accuracy R ± 4 mm ± 2 mm
Other outputs service output,
plausibility output,
PNP,
short-circuit proof 50 mA
Standard conformity

39
Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
Table 8.1 Technical data
9 Connector pin assignment
Table 9.1 Connector pin assignment
Standards EN 60947-5-2
Ambient conditions
Ambient temperature -10 ... 50 °C (263 ... 323 K)
Storage temperature -30 ... 75 °C (243 ... 348 K)
Mechanical specifications
Dimensions 93 mm x 93 mm x 42 mm
Protection degree IP67
Connection with 12-pin, M16 connector
100 m
Material
Housing ABS
Optical face PMMA
Mass 230 g
All indications regarding accuracy and distance are based on the specified surface at constant
ambient conditions and with a minimum operating time of 15 minutes.
VDM70-10-L/87/122/160 VDM70-250-R/20/87/160
A
B
C
D
E
F
G
H
J
K
L
M
Tx +
Q1
Rx +
Analog
Qs
Qp
+ Ub
Rx -
n. c.
Tx -
Q2
0 V
A
B
C
D
E
F
G
H
J
K
L
M
Tx +
Q1
Rx +
Qs
Qp
+ Ub
Rx -
n. c.
Tx -
Q2
0 V
FGM
EDCL
HJK
BA

Date of issue: 03/06/2007 Part No. 196790
Distance measurement device VDM70
40
Table 9.2 Connector pin assignment
9.1 Cable lengths, shield
9.1.1 Cable length RS 422
The RS 422 interface is defined as a reliable, serial interface in full duplex mode, with
transfer rates up to 10 MBaud and a cable length of 1000 m.
9.1.2 Cable length SSI
The maximum baud rate for reliable data transfer depends on the cable length.
Table 9.3 Cable length SSI
9.1.3 RS 422 and SSI screen
The screened connection cable (see accessories) is connected to the sensor connector
and the ground terminal of the control cabinet.
10 Order data / Devices and accessories
Pin Name Description
ATX+ RS 422: Transmitter data / SSI: Data +
BQ1 Signal output Q1
CRX+ RS 422: Receiver data / SSI: Clock +
Danalog Analog output 4 to 20 mA (only VDM70-10-L)
EQs Service output Qs
FQp Plausibility output Qp
GUb Ub + 18 ... 30 V
HRX- RS 422: Receiver data / SSI: Clock -
JNC
KTX- RS 422: Sendedaten / SSI: Data -
LQ2 Signal output Q2
MGND 0 V (GND)
Cable length /m < 25 < 50 < 100 < 200 < 400
Baud rate < 500 kHz < 400 kHz < 300 kHz < 200 kHz < 100 kHz
Order data Description
OMH-VDM35 Mounting bracket
OMH-VDM35-01 Fine adjustment for mounting bracket
VDM35-AR Aligning aid
42312A Cable connector, connector, female 12-pin
42312A-05M-12P-SCS Connecting cable, 12-pin, length 5 m
42312A-08M-12P-SCS Connecting cable, 12-pin, length 8 m
42312A-20M-12P-SCS Connecting cable, 12-pin, length 20 m
42312B Cable connector, connector, female 12-pin, angled
42312B-05M-12P-SCS Connecting cable, 12-pin, length 5 m, angled
42312B-10M-12P-SCS Connecting cable, 12-pin, length 10 m, angled